Had to return it. The office chair I got from Staples left divots in the vinyl and you’d get stuck in them making it hard to roll smoothly. Used on flat Berber carpet
It was flat when I bought it so that made it very easy to lay on the floor. It has stayed flat and has not curled like previous mats. This is an excellent mat.
Not very thick - so after a few hours of sitting the wheels of the chair create indentations in the mat thus making it more difficult to roll the chair - i'm average weight of 160 pounds too...